B5 Systems Sierra K Extension Kit Black

Name: B5 Systems Sierra K Extension Kit Black
Brand: B5 Systems
SKU: ZASRK1660
Price: 128.25 USD
Availability: InStock

Reviewed by Hunter's Outpost Editorial Team

Last Reviewed: September 6, 2026

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

$128.25

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SKU: ZASRK1660

Overview

B5 systems sierra k extension kit black Other Features: Srk extension kit comes with receiver extension, buffer and spring